Excel 2007 : Worksheet is afloat - how to get it back?

Dear All,

In my Excel 2007 I have one worksheet open with multiple tabs. After I minimized the sheet I cannot get it back to full size anymore. I only have the minimize / maximize options for Excel itself avaible but these buttons are not visisble inthe worksheet. So the worksheet its floating and stuck.

Also the title of my worksheet isn't displayed by Excel, nor is it visible in the Windows toolbar. I only see a blank Excel with no title of my active worksheet.

I've tried closing Excel entirely and restarting, but the sheet remains stuck.
It's really really frustrating me.

Can anyone please advise how to regain control over my floating worksheet?


Thanks al lot.

Robert